Finding the Fourth Proportional to 438,643.80, 657,965.70 and 106,219.80
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Solution
The fourth proportional to 438,643.80, 657,965.70 and 106,219.80 is: 159,329.70
Step by Step Solution
- Step 1: Write the proportion equation
438,643.80 : 657,965.70 = 106,219.80 : x - Step 2: Convert to fraction form
438,643.80/657,965.70 = 106,219.80/x - Step 3: Cross multiply
438,643.80x = 657,965.70 × 106,219.80 - Step 4: Simplify right side
438,643.80x = 69,888,985,060.86 - Step 5: Solve for x
x = 69,888,985,060.86/438,643.80 - Step 6: Final answer
x = 159,329.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.